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Qwt User's Guide
6.1.5
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Some clipping algorithms. More...
#include <qwt_clipper.h>
Static Public Member Functions | |
| static QPolygon | clipPolygon (const QRect &, const QPolygon &, bool closePolygon=false) |
| static QPolygon | clipPolygon (const QRectF &, const QPolygon &, bool closePolygon=false) |
| static QPolygonF | clipPolygonF (const QRectF &, const QPolygonF &, bool closePolygon=false) |
| static QVector< QwtInterval > | clipCircle (const QRectF &, const QPointF &, double radius) |
Some clipping algorithms.
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Circle clipping
clipCircle() divides a circle into intervals of angles representing arcs of the circle. When the circle is completely inside the clip rectangle an interval [0.0, 2 * M_PI] is returned.
| clipRect | Clip rectangle |
| center | Center of the circle |
| radius | Radius of the circle |
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static |
Sutherland-Hodgman polygon clipping
| clipRect | Clip rectangle |
| polygon | Polygon |
| closePolygon | True, when the polygon is closed |
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static |
Sutherland-Hodgman polygon clipping
| clipRect | Clip rectangle |
| polygon | Polygon |
| closePolygon | True, when the polygon is closed |
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static |
Sutherland-Hodgman polygon clipping
| clipRect | Clip rectangle |
| polygon | Polygon |
| closePolygon | True, when the polygon is closed |